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MDB Same Day HVAC proudly serves Walnut Creek, CA, as your go-to expert for furnace repair, HVAC installation or replacement, and overall HVAC system repair. With a name that promises prompt, same-day service, this company is dedicated to ensuring that your home or business stays comfortable year-round. MDB Same Day HVAC has built its reputation on a foundation of reliability, professionalism, and quality workmanshipāa commitment reflected in every service call. Specializing in comprehensive HVAC solutions, this seasoned team understands that efficient, well-maintained heating and cooling systems are critical to your comfort and safety. Whe...
MDB Same Day HVAC
Home Care & Success Stories
MDB Same Day HVAC
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Jenny P.
I highly recommend the service of MBD Same Day HVAC. The support I received was through and done in timely manner. I called requesting an a/c service because I had an issue with my unit, they came and solved the issue the same day. The specialist replaced the zoning control board and now itâ s working properly. The customer service was outstanding! I really appreciate their honest work.
Review from HomeAdvisor
Archie T.
Be careful with Mario.
First of all he doesn't use scales when doing refill of the A/C system with refrigerant. Honest contractors always use scales. It means he just overcharged us.
Second is the price of R22 refrigerant is $140/lb and it's a lot. Quick search in internet can give you $40/lb. That's a hell of a markup!
Giving two stars, not one, just because he came the same day. Take 3 starts off for trustworthiness.
So, just stay away.
Review from Yelp
Brian B.
Yes, I recommend this pro
Review from Angi
Cali B.
I usually don't write reviews but I wanted to share my experience in hopes it will help others. On a Monday night my AC stopped blowing cold air. By the morning the house was 84 degrees and the high was 115. I have a baby and could not go throughout the day with no ac. MDB Same Day HVAC was the only company who could fit me in that same day. The person I worked with Mario was very friendly, and thought I could trust his expertise. After about 2 minutes of looking at my ac unit he diagnosed it and fixed it with a replacement capacitor. He charged me $450. This entire process took about 10 minutes. At the time I didn't know that was a huge rip off. After he left, I had a feeling it was way to expensive and called a friend. The friend stated that was a rip off. After doing research and talking with another HVAC company. That was a $20 part. I feel very upset over this experience. I am a stay at home mom with a 1 year old. $450 is a lot of money in our family. Don't recommend this place unless you have money to blow
Review from Yelp
Cecilia F.
This is the only business that answered my phone call for emergency service today when there is a heatwave. He showed up on the time frame he said he would come and fixed or unit within few minutes. He was very honest and showed me what is happening with our unit. The other businesses did not return call until 2pm and the earliest time they can come is Friday when the heat is not as bad as today. I signed up for yearly tune up as well.
Review from Yelp
Brian B.
Fast, professional, knowledgeable, I will hire them again.
Review from HomeAdvisor
Jan 30, 2026